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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: Index4.html 602 2015-01-05 18:49:18Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.index;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.NavigableMap;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.NavigableSet;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.jsimpledb.tuple.Tuple2;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.tuple.Tuple3;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.tuple.Tuple4;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.tuple.Tuple5;<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>/**<a name="line.18"></a>
<span class="sourceLineNo">019</span> * An index on a four fields.<a name="line.19"></a>
<span class="sourceLineNo">020</span> *<a name="line.20"></a>
<span class="sourceLineNo">021</span> * &lt;p&gt;<a name="line.21"></a>
<span class="sourceLineNo">022</span> * Indexes are read-only and "live", always reflecting the current transaction state.<a name="line.22"></a>
<span class="sourceLineNo">023</span> * &lt;/p&gt;<a name="line.23"></a>
<span class="sourceLineNo">024</span> *<a name="line.24"></a>
<span class="sourceLineNo">025</span> * @param &lt;V1&gt; first indexed value type<a name="line.25"></a>
<span class="sourceLineNo">026</span> * @param &lt;V2&gt; second indexed value type<a name="line.26"></a>
<span class="sourceLineNo">027</span> * @param &lt;V3&gt; third indexed value type<a name="line.27"></a>
<span class="sourceLineNo">028</span> * @param &lt;V4&gt; fourth indexed value type<a name="line.28"></a>
<span class="sourceLineNo">029</span> * @param &lt;T&gt; index target type<a name="line.29"></a>
<span class="sourceLineNo">030</span> * @see org.jsimpledb.index<a name="line.30"></a>
<span class="sourceLineNo">031</span> */<a name="line.31"></a>
<span class="sourceLineNo">032</span>public interface Index4&lt;V1, V2, V3, V4, T&gt; {<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>    /**<a name="line.34"></a>
<span class="sourceLineNo">035</span>     * View this index as a {@link NavigableSet} of tuples.<a name="line.35"></a>
<span class="sourceLineNo">036</span>     *<a name="line.36"></a>
<span class="sourceLineNo">037</span>     * @return {@link NavigableSet} of tuples containing indexed values and target value<a name="line.37"></a>
<span class="sourceLineNo">038</span>     */<a name="line.38"></a>
<span class="sourceLineNo">039</span>    NavigableSet&lt;Tuple5&lt;V1, V2, V3, V4, T&gt;&gt; asSet();<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>    /**<a name="line.41"></a>
<span class="sourceLineNo">042</span>     * View this index as a {@link NavigableMap} of target values keyed by indexed value tuples.<a name="line.42"></a>
<span class="sourceLineNo">043</span>     *<a name="line.43"></a>
<span class="sourceLineNo">044</span>     * @return {@link NavigableMap} from indexed value tuple to the corresponding set of target objects<a name="line.44"></a>
<span class="sourceLineNo">045</span>     */<a name="line.45"></a>
<span class="sourceLineNo">046</span>    NavigableMap&lt;Tuple4&lt;V1, V2, V3, V4&gt;, NavigableSet&lt;T&gt;&gt; asMap();<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>    /**<a name="line.48"></a>
<span class="sourceLineNo">049</span>     * View this index as a {@link NavigableMap} of {@link Index}s keyed by the first three values.<a name="line.49"></a>
<span class="sourceLineNo">050</span>     *<a name="line.50"></a>
<span class="sourceLineNo">051</span>     * @return {@link NavigableMap} from first three values to {@link Index}<a name="line.51"></a>
<span class="sourceLineNo">052</span>     */<a name="line.52"></a>
<span class="sourceLineNo">053</span>    NavigableMap&lt;Tuple3&lt;V1, V2, V3&gt;, Index&lt;V4, T&gt;&gt; asMapOfIndex();<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * View this index as a {@link NavigableMap} of {@link Index2}s keyed by the first two values.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     *<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * @return {@link NavigableMap} from first two values to {@link Index2}<a name="line.58"></a>
<span class="sourceLineNo">059</span>     */<a name="line.59"></a>
<span class="sourceLineNo">060</span>    NavigableMap&lt;Tuple2&lt;V1, V2&gt;, Index2&lt;V3, V4, T&gt;&gt; asMapOfIndex2();<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>    /**<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * View this index as a {@link NavigableMap} of {@link Index3}s keyed by the first value.<a name="line.63"></a>
<span class="sourceLineNo">064</span>     *<a name="line.64"></a>
<span class="sourceLineNo">065</span>     * @return {@link NavigableMap} from first value to {@link Index3}<a name="line.65"></a>
<span class="sourceLineNo">066</span>     */<a name="line.66"></a>
<span class="sourceLineNo">067</span>    NavigableMap&lt;V1, Index3&lt;V2, V3, V4, T&gt;&gt; asMapOfIndex3();<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>    /**<a name="line.69"></a>
<span class="sourceLineNo">070</span>     * Get the prefix of this instance that only includes the first four indexed fields.<a name="line.70"></a>
<span class="sourceLineNo">071</span>     *<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * @return prefix of this index<a name="line.72"></a>
<span class="sourceLineNo">073</span>     */<a name="line.73"></a>
<span class="sourceLineNo">074</span>    Index3&lt;V1, V2, V3, V4&gt; asIndex3();<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>    /**<a name="line.76"></a>
<span class="sourceLineNo">077</span>     * Get the prefix of this instance that only includes the first three indexed fields.<a name="line.77"></a>
<span class="sourceLineNo">078</span>     *<a name="line.78"></a>
<span class="sourceLineNo">079</span>     * @return prefix of this index<a name="line.79"></a>
<span class="sourceLineNo">080</span>     */<a name="line.80"></a>
<span class="sourceLineNo">081</span>    Index2&lt;V1, V2, V3&gt; asIndex2();<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>    /**<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * Get the prefix of this instance that only includes the first two indexed fields.<a name="line.84"></a>
<span class="sourceLineNo">085</span>     *<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * @return prefix of this index<a name="line.86"></a>
<span class="sourceLineNo">087</span>     */<a name="line.87"></a>
<span class="sourceLineNo">088</span>    Index&lt;V1, V2&gt; asIndex();<a name="line.88"></a>
<span class="sourceLineNo">089</span>}<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>




























































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